Respuesta :

Answer:

x i a 90 degree anglt

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

Sum of all angles = 360°

85° + x + 35° + 2x = 360°

3x + 120° = 360°

3x = 360° - 120°

3x = 240°

x = 80°